LM22676MR-5.0
| Parameters | |
|---|---|
| Series | SIMPLE SWITCHER® |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | RoHS non-compliant |
| Package / Case | 8-PowerSOIC (0.154", 3.90mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Input (Max) | 42V |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Current - Output | 3A |
| Supplier Device Package | 8-SO PowerPad |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Frequency - Switching | 500kHz |
| Synchronous Rectifier | No |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage - Input (Min) | 4.5V |
| Package | Bulk |
| Product Status | Active |
| REACH Status | REACH Unaffected |
| Standard Package | 1 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LM22676MR-5.0 Buck Switching Regulator IC Positive Fixed 5V 1 Output 3A 8-SOIC
The LM22676MR-5.0 is a TI SIMPLE SWITCHER fixed 5V synchronous buck regulator in 8-pin SOIC exposed pad package, accepting an input voltage range from 4.5V to 42V and supplying up to 5A continuous output current. It integrates a low Rds(on) power MOSFET, adopts internal compensation and fixed 500kHz switching frequency, and delivers high conversion efficiency for high voltage step-down power designs. With built-in protection circuits and a junction temperature range of -40°C to 125°C, it simplifies power layout and reduces external component count for industrial and telecom embedded power rails.
Key Features
● Wide 4.5V to 42V input range with fixed 5V output and tight voltage reference accuracy.
● Integrated power MOSFET supports 5A continuous output current and peak efficiency over 92%.
● Fixed 500kHz switching frequency, internal loop compensation to remove extra compensation network.
● Built-in soft-start, cycle-by-cycle current limit, thermal shutdown and under-voltage lockout for system protection.
● Precision enable pin for power sequence control and low shutdown current to save standby power.
● Exposed thermal pad SOIC-8 package enhances heat dissipation for heavy load applications.
FAQ: Is LM22676MR-5.0 suitable for automotive use? This is commercial grade and not AEC-Q100 qualified, so automotive projects need automotive variants. Place input capacitors near the VIN pin and fully solder the exposed thermal pad to the PCB copper area to reduce thermal rise and switching noise.
Alternative buck regulator models
1. LM22676MR-ADJ: Same 5A,42V buck chip with adjustable output voltage, ideal for designs requiring flexible output voltage configuration.
2. LM22675MR-5.0: TI 4A fixed 5V SIMPLE SWITCHER buck regulator with identical package and similar input range as a lower current alternative.
3. LM22676QMR-5.0: AEC-Q100 automotive qualified version with same electrical parameters for vehicle electronic power systems.
